“Weird Al” Yankovic is back and just as funny as ever. This time, the parody singer enlisted the help of stars like Aisha Tyler, Margaret Cho, Eric Stonestreet, Jack Black and Kristen Schaal to mock the Pharrell Williams hit “Happy.” The video for Yankovic’s “Tacky” is already going viral. “Weird Al” Yankovic’s “Tacky” music video premiered Monday on Nerdist. According to the website, the clip was filmed at the Palace Theater